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Yang ZQ, Hajenius M, Baselmans JJA, Gao JR, Voronov B, Gol’tsman GN. Reduced noise in NbN hot-electron bolometer mixers by annealing. Supercond Sci Technol. 2006;19(4):L (9 to 12).
Abstract: We find that the sensitivity of heterodyne receivers based on superconducting hot-electron bolometers (HEBs) increases by 25–30% after annealing at 85 °C in vacuum. The devices studied are twin-slot antenna coupled mixers with a small NbN bridge of 1 × 0.15 µm2. We show that annealing changes the device properties as reflected in sharper resistive transitions of the complete device, apparently reducing the device-related noise. The lowest receiver noise temperature of 700 K is measured at a local oscillator frequency of 1.63 THz and a bath temperature of 4.3 K.
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Rönnung F, Cherednichenko S, Winkler D, Gol'tsman GN. A nanoscale YBCO mixer optically coupled with a bow tie antenna. Supercond Sci Technol. 1999;12(11):853–5.
Abstract: The bolometric response of YBa2Cu3O7-δ(YBCO) hot-electron bolometers (HEBs) to near-infrared radiation was studied. Devices were fabricated from a 50 nm thick film and had in-plane areas of 10 × 10 µm2, 2 × 0.2 µm2, 1 × 0.2µm2 and 0.5 × 0.2 µm2. We found that nonequilibrium phonons cool down more effectively for the bolometers with smaller area. For the smallest bolometer the bolometric component in the response is 10 dB less than for the largest one.
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Gershenzon EM, Gol'tsman GN, Gogidze IG, Gusev YP, Elantiev AI, Karasik BS, et al. Millimeter and submillimeter wave range mixer based on electronic heating of superconducting films in the resistive state. Sov Supercond. 1990;3(10):1582–97.
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Gershenzon EM, Goltsman G, Orlova S, Ptitsina N, Gurvich Y. Germanium hot-electron narrow-band detector. Sov Radio Engineering And Electronic Physics. 1971;16(8):1346.
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Gershenzon EM, Goltsman GN, Semenov AD, Sergeev AV. Limiting characteristic of fast superconducting bolometers. Sov Phys-Tech Phys. 1989;34:195–9.
Abstract: Теоретически и экспериментально исследовано физическое ограничение быстродействия сверхпроводящего болометра. Показано, что минимальная постоянная времени реализуется в условиях электронного разогрева и определяется процессом неупругого электрон-фонон- ного взаимодействия. Сформулированы требования кконструкции «электронного болометра» для достижения предельной чувствительности. Проведено сравнение характеристик электронного болометра и обычных болометров различных типов.
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